/* 공용 모달 레이어 — 준비중 안내, 이탈 확인 등 전 모듈에서 재사용하는 단순 팝업 패턴. */
.modal-layer {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(23, 37, 84, .45);
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 200;
}
.modal-layer.is-active { display: flex; }
.modal-layer__window {
  position: relative;
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 36px 28px 28px;
  text-align: center;
}
.modal-close {
  position: absolute;
  top: 14px; right: 16px;
  border: none;
  background: transparent;
  font-size: 20px;
  color: var(--text-mute);
  cursor: pointer;
  line-height: 1;
}
.modal-title { font-size: 20px; font-weight: 800; color: var(--primary-dark); margin-bottom: 12px; }
.modal-desc { font-size: 14px; color: var(--text-mute); margin-bottom: 24px; }
.modal-actions { display: flex; flex-direction: column; gap: 10px; }
.modal-actions .btn.is-hidden { display: none; }
.modal-timer {
  display: inline-block;
  font-size: 13px; font-weight: 700; color: var(--primary-dark);
  background: var(--primary-pale); border-radius: 999px; padding: 6px 14px; margin-bottom: 20px;
}
.modal-timer strong { color: var(--wrong); font-size: 14px; }